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1、weekendingPRL110,217405(2013)PHYSICALREVIEWLETTERS24MAY2013SpontaneousEmissionControlinaTunableHybridPhotonicSystemMartinFrimmer*andA.FemiusKoenderinkCenterforNanophotonics,FOMInstituteAMOLF,SciencePark104,1098XGAmsterdam,TheNetherlands(Received27December2012;published23May2013)Weexperimentallydemon
2、stratecontroloftherateofspontaneousemissioninatunablehybridphotonicsystemthatconsistsoftwocanonicalbuildingblocksforspontaneousemissioncontrol,anopticalantennaandamirror,eachprovidingamodificationofthelocaldensityofopticalstates(LDOS).Wecouplefluorophorestoaplasmonicantennatocreateasuperemitterwithane
3、nhanceddecayrate.InasuperemitteranalogoftheseminalDrexhageexperimentweprobetheLDOSofananomechanicallyapproachedmirror.Becauseoftheelectrodynamicinteractionoftheantennawithitsownmirrorimage,thesuperemittertracestheinverseoftheLDOSenhancementprovidedbythemirror,instarkcontrasttoabaresource,whosedecayr
4、ateisproportionaltothemirrorLDOS.DOI:10.1103/PhysRevLett.110.217405PACSnumbers:78.67.Pt,42.50.pThestudyoflight-matterinteractionisacornerstoneofThissystemcanbeviewedasthefluorophoreprobingthecontemporaryphysics.AccordingtoFermi’sgoldenrulecompositeenhancementLDOShybofthehybridcomposedtherateofsponta
5、neousemissionoflightcanbecontrolledofantennaandmirror.Alternatively,onemightviewthethroughengineeringofphotonicmodes[1].Inaseminalsuperemitterasanewlumpedphotoniccircuitelementexperiment,Drexhagemodifiedthedecayrateoffluoro-[14,15],whicharosefromahybridizationofthesourcephoresbyvaryingtheirdistancetoa
6、mirror[2].By1946withtheantennaparticleandnowservesasaprobeofthePurcellhadalreadysuggestedboostingthedecayrateofmirrorLDOSM.Inthissuperemitter-equivalentoftheclas-asourcebycouplingittoaresonantcavity[3].BothsicDrexhageexperimentthenano-antennaandthemirrorDrexhage’sandPurcell’sworksarenowdiscussedinte
7、rmswouldindividuallyprovidethewellknownrateenhance-ofthelocaldensityofopticalstates(LDOS),aquantitymentsLDOSantandLDOSM,respectively.Importantly,governingspontaneousemission,thermalradiation,andhoweve
